<template>
    <el-container style="height: 100vh;">
        <el-aside width="200px" style="background-color: rgb(238, 241, 246)">
          <!-- router路由模式 unique-opened一次只能打开一个 default-active高亮 -->
          <el-menu router unique-opened :default-active="$route.path">  
              <el-submenu index="1">
                  <template slot="title"><i class="el-icon-message"></i>内容管理</template>
                  <el-menu-item-group>
                    <template slot="title">分类</template>
                    <el-menu-item index="/categories/create">新建分类</el-menu-item>
                    <el-menu-item index="/categories/list">分类列表</el-menu-item>
                  </el-menu-item-group>
                  <el-menu-item-group>
                      <template slot="title">物品</template>
                      <el-menu-item index="/items/create">新建物品</el-menu-item>
                      <el-menu-item index="/items/list">物品列表</el-menu-item>
                  </el-menu-item-group>
                  <el-menu-item-group>
                      <template slot="title">英雄</template>
                      <el-menu-item index="/heroes/create">新建英雄</el-menu-item>
                      <el-menu-item index="/heroes/list">英雄列表</el-menu-item>
                  </el-menu-item-group>
                  <el-menu-item-group>
                      <template slot="title">文章</template>
                      <el-menu-item index="/articles/create">新建文章</el-menu-item>
                      <el-menu-item index="/articles/list">文章列表</el-menu-item>
                  </el-menu-item-group>
              </el-submenu>

              <el-submenu index="2">
                <template slot="title"><i class="el-icon-message"></i>运营管理</template>
                <el-menu-item-group>
                    <template slot="title">广告位</template>
                    <el-menu-item index="/ads/create">新建广告位</el-menu-item>
                    <el-menu-item index="/ads/list">广告位列表</el-menu-item>
                </el-menu-item-group>
              </el-submenu>

              <el-submenu index="3">
                <template slot="title"><i class="el-icon-message"></i>系统设置</template>
                <el-menu-item-group>
                    <template slot="title">管理员</template>
                    <el-menu-item index="/admin_users/create">新建管理员</el-menu-item>
                    <el-menu-item index="/admin_users/list">管理员列表</el-menu-item>
                </el-menu-item-group>
              </el-submenu>
              
          </el-menu>
        </el-aside>
        
        <el-container>
            <el-header style="text-align: right; font-size: 12px">
            <el-dropdown>
                <i class="el-icon-setting" style="margin-right: 15px"></i>
                <el-dropdown-menu slot="dropdown">
                <el-dropdown-item>查看</el-dropdown-item>
                <el-dropdown-item>新增</el-dropdown-item>
                <el-dropdown-item>删除</el-dropdown-item>
                </el-dropdown-menu>
            </el-dropdown>
            <span>王小虎</span>
            </el-header>
            
            <el-main>
              <router-view :key="$route.path"></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<style>
  .el-header {
    background-color: #B3C0D1;
    color: #333;
    line-height: 60px;
  }
  
  .el-aside {
    color: #333;
  }
</style>

<script>
  export default {
    data() {
      const item = {
        date: '2016-05-02',
        name: '王小虎',
        address: '上海市普陀区金沙江路 1518 弄'
      };
      return {
        tableData: Array(20).fill(item)
      }
    }
  };
</script>